When evaluating quality, focus on the internal frame construction; prioritize kiln-dried solid wood (such as larch or eucalyptus) or high-grade plywood to prevent warping. The upholstery fabric should have a Martindale rub count of at least 20,000 for residential use or 30,000+ for hospitality projects. Additionally, ensure the high-density foam used in the headboard has a minimum density of 35kg/m³ to prevent sagging over time. For the support system, look for reinforced steel center rails and poplar wood slats with a spacing of no more than 6cm to ensure mattress longevity.